package java基础.base;

/**
 * @projectName: JAVA编程
 * @package: PACKAGE_NAME
 * @className: base.Application
 * @author: IT_Jay
 * @description: TODO
 * @date: 2021/11/14 21:08
 */
public class Demo01 {
    public static void main(String[] args) {

        //标识符大小写敏感
        String Ahello = "IT_Jay";
        String hello = "IT_Jay";
        String $hello = "IT_Jay";
        String _hello = "IT_Jay";

        /*
        标识符错误写法范例
        String 1hello = "IT_Jay";
        String #hello = "IT_Jay";
        String *hello = "IT_Jay";
        String class = "IT_Jay";
        String _1*# = "IT_Jay";
         */
        String _1class = "IT_Jay";
        System.out.println(_1class);
    }
}
